2.2. Preparation of apple slices
Apples (Fuji) were purchased from a local wholesale distributor at
commercial maturity. Apples were selected for uniform size and
appearance. These fruits were rinsed gently with tap water by hand
and dried naturally. Then apples were peeled, cored and cut into 1 cm
thick cubes (average weight at 1±0.3 g) with a sharp stainless steel knife
at 10 °C. The knife and cutting board were washed with deionized water
and rinsed with 1000 μl/L sodium hypochlorite solution prior to use